Calculating the Mode

The mode is the value that occurs most often in the data. PROC UNIVARIATE counts repetitions of the values of the analysis
variables or, if you specify the ROUND= option, the rounded values. If a tie occurs for the most frequent value, the procedure
reports the lowest mode in the table labeled “Basic Statistical Measures” in the statistical output. To list all possible modes, use the MODES option in the PROC UNIVARIATE statement. When no repetitions
occur in the data (as with truly continuous data), the procedure does not report the mode. The WEIGHT statement has no effect
on the mode. See Example 4.2.